Car roof



C. D. BONSALL CAR ROOF July 12, 1921. 1,635,305

Filed April '28. 1926 Patented July 12, 1927.

UNITED STATES 1,635,305 TPATENT orn-ca.

CHARLES DAVID BONSALL, OF PITTSBURGH, EENNSYLVANIA, .ASSIGNOR .TO I.MURPI-IY COMBANY, OF NEW ,KENSINGTON, PENNSYLVANIA, A CORPORATION. OF

PENNSYLVANIA.

' CAR .BOOF.

This invention relates'principally to met-a1 car roofs of the flexiblesingle course type, wherein theroof sheets are independently movablysupported -.betwee'n carlines on the side platesof-the car and onpurlinsthat are secured to Y the carlines and extendlongitudinallyof thecar between carlines.

'The r principal object of the present invention is to reduce the costof roots ofthe above type, to simplify the construction thereof and tofacilitate the operation of: as sembling the roof.

The invention consists principally in an arrangement that supports theside -marginal portions of the sheets at intervals throughout theirlength and Y rendersthe K unsupported -middle portions of the sheetsstrong enough to support the vertical roof load. The invention furtherconsists-iathe parts and-in the arrangements-and combina tions of partshereinafter described and claimed.

in the accompanying drawing which forms part of this. specificationandwherein like symbols refer to like parts wherever they occur,

Fig. 1 is'aplan-view of a portion ofthe carroof embodying my invention,

Fig.2 is an enlarged transverse section through one-half of the roof onthe line 22in Fig. 1, g

IFig. Bis a longitudinal section 'through the'roof entire line '33 inFig. Land Figs. 4-and5 are-verticallongitudinal sections, similar toFig. 3, showing modified forms'ofthe invention. i

'Referring'to'Figs. 1 to 3, inclusive-of the accompanying drawing, myinvention 'is' shown-in connection with a carroof comprising Z-bar sideplates 6 connebtedbycarlines '7 of inverted channel-shaped sectionhaving'lateral base flanges 8 resting on and rigidly secnredto'the'topflanges of said side plates. Roof sheets9 exten'dfrom side to. sideof'the car between carlines with'their eaves endportions resting onfiller blocks 10 secured tofthe tops of the side plates. The roof sheetsare narrower thanthe spaces be tween carlines and are provided withdepending eaves 'fianges ll'that overhang thev outer edges of blockslOand are spaced therefrom, whereby said sheets are independently movable.V

The roof sheets are provided with uperal basefianges rest-on the ridgeportions 'Of thQSGaIH'COVGIS and are secured in position by the rivetsthat secure the ridge portions of said seam covers to the carlines.

Sheet supporting-members 20 are rigidly secured tothe base flanges ofthe car-lines by means of bolts 21 The supporting me-in, bersaredisposedtransverse or crosswiseto the length of the-carlin-es andproject on opposite sides ofsaid ca-rlines and are spaced apartlongitudinally thereof. As shownin the drawing, said supporting membersare secured to-the carlines at the ridge of the car and at pointssubstantiallymidway between the ridge and eaves thereof. The supportingmembers of; ad acent carhnes are opposed to .and terminate short of eachother, but project far enough beyond the sides of the earlinesto supportthe sidema-n ginal )ortions of the sheets while permitting s ght'sluingmovement thereof. The sheets are provided with 1 upstanding corrugationsor stiffening-ribs 22 that-.arevlooated in line with and overlap theends of the supporting blocks of adjacent ca-rlines.

'By the arrangement described the portions of the supporting blocks thatproject beyond the sides of the carlines function after the .manner ofcantilever arms which support the side marginal portions of the sheets.and

cut downthe effective spanthat the sheets have to:bridge; while-thecorrugations or ribs formed inthe sheetsspanthe spaces between theopposing endsof the cantilever arms of adjacent cal-lines and thusserveto increase-the vertical strength of the unsupported portionsof thesheets and render themst rong enough to'support the vertical roofload.

The above described roof construction is simple and it can be veryeasily assembled and repaired; and it greatly reduces the cost of therooi by dispensing with the use of purlins and by substituting thereforsheet supports comprising a multiplicity of short and inexpensive piecesof lumber that can be easily handled and readily secured in place.

In the modification oi the invention shown in Fig. 4, the sheets arestili'ened between the supporting members or adjacent carlines by meansof stillening ribs or corrugations 22 that extend transversely of thecar parallel to the carlines.

In the modification shown in Fig. 5, the sheets 9 are still'ened betweenthe supports 20 of adjacent carlines by arching the body portion overthe spaces between said supports, Whose projecting portions have theirupper surface curved to correspond to the radius of curvature oi thearched body portion out said sheets.

Other modifications oi the form and arrangement 01" the parts may bemade in View of the foregoing description of the invention; and theinvention is not restricted to the forms and arrangements shown in thedrawing.

l/Vhat I claim is:

1. A car root comprising side plates, carlines supported thereby, metalroot sheets,

supports for said root sheets, said supports being mounted on saidcarlines and extending transversely of said carlines beyond the sidesthereof, the supports on one carline terminating short of the supportson the next carline, and means for stiliening said sheets between thesupports on acent carlines, said stiffening means extending between thesupports of adjacent carlines and overlapping the ends thereof.

2. A car root comprising side plates, carlines connecting said sideplates, and metal rool sheets, said carlines being provided with aplurality of spaced sheet supporting portions extending beyond. thesides thereof, the sheet supporting portions of adjacent carlines beingspaced apart longitudinally of the car, said roo't sheets being providedwith stiffening ribs that spanthe spaces between the sheet supportingportions oi adjacent carlines and overlap the ends of said portions.

3. A car root comprising side plates, carlines supported by said ideplates, metal roof sheets, and supports for said sheets, said supportsbeing secured to said carlines and extending on opposite sides thereof,the supports of adjacent carlines being spaced apart longitudinally oi?the car and the portions or" the sheets located between the supports ofadjacent carlines being provided with stifiening that extend from asupport on one carline to a support on an adjacent carline and overlapthe ends of said supports.

4. Acar roof comprising side plates, carlines connecting said sideplates, metal roof sheets arranged in the spaces between carlines, seamcovers covering the carlines and the marginal portions of adjacentsheets, and a plurality of sheet supports secured to the carlinescrosswise to their length, the supports on one carlineterminating shortof the supports on the next carline, the portions 01 the sheets locatedbetween the ends otthe supporting members of adjacent carlines beingprovided with stiffening ribs.

5. A car roof comprising side plates, carlines connecting said sideplates, metal roof sheets arranged in the spaces between carlines, seamcovers covering the carlines and the marginal portions of adjacentsheets, and a plurality of sheet supporting members secured to thecarlines crosswise to their length, the supports on one carline terminating short of the supports on the next carline, the portions of thesheets located between the ends of the supporting members of adjacentcarlines being provided with stifi'ening ribs that extend from thesupporting members on one carline to the supporting member on anadjacent carline.

6. A car root comprising side plates, lines connecting said side plates,metal roof sheets arranged in the spaces between carlines, seam coversspanning said carlines and the adjacent side marginal portions oi saidsheets, and a plurality of supports for said root sheets, said supportsbeing secured to said carlines crosswise to their length, the supportsof adjacent carlines being opposed to and terminating short of eachother, said sheets being formed with stiffening ribs that extend betweenthe opposed supports on adjacent carlines.

7. A. car roof comprising sideplates, carlines connecting said sideplates, spaced sheet supports secured to said carlines crosswise totheir length and projecting onopposite sides thereof in alinementlongitudinally of the car, and root sheets resting on the projectingportions of the supporting menibers of adjacent carlines and spanningthe spaces therebetween, said roof sheets being provided with stiffeningcorrugation-s that extend from the support on one carline to the supporton an ad acent carline.

8. A car roof comprising side plates, car- I lines connecting said sideplates, said carlines being provided with a plurality of spaced armsthat project laterally therefrom on opposite sides thereof, androofsheets arranged between adjacent carlines car- 7 IOU with their sidemarginal portions resting on the lateral arms thereof, said armsextending far enough inside the side lines of said sheet toconstitutecantilever arms for supporting the side marginal portionsofsaid sheets. 1

9. A car roof comprising side plates, carlines connecting said sideplates, said side plates being provided with a plurality of arms thatproject laterally therefrom on opposite sides thereof, and roof sheetsarranged with their side marginal portions resting on the lateral armsof said carlines, said arms constituting cantilevers for supporting theside marginal portions of said sheets, said sheets being provided withribs 10 Signed at New Kensington, Pennsylvania, 15

this 23rd day of April, 1926.

CHARLES DAVID BONSALL.

